I'm embarrassed to ask this, but here goes . . .
My mother bought a new range with a self-cleaning oven back in the 1970s. She declared that she would never use the self-cleaning feature because she had heard that it will make the oven so hot that the inside coating will crack. I never took any of my mother's appliance and technology urban legends (there were lots more) seriously, so I just thought it was silly to have such a convenient feature and not use it.
I bought my first range with a self-cleaning oven about two years ago. When my parents saw it the first time, my mother repeated her belief that the feature was too dangerous to use. I would have just shrugged it off, but my father, my rational and scientific parent, agreed!
So, I ask the CH's, has anyone ever heard of a self-cleaning oven cracking during cleaning?